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A194 Grade 2H Heavy Hex Nuts

Rushabh Fastners (RF) manufactures and supplies ASTM A194 Grade 2H Nuts in Heavy Hex Nut, Hex Nut, and Full Height Nut configurations. Produced from quenched and tempered carbon steel, these nuts conform to ASTM A194 requirements and are intended for applications requiring high mechanical strength and dependable fastening performance.

Our Grade 2H Nuts are manufactured to ASME B18.2.2 dimensional standards and feature UNC threads. With a minimum proof load of 175 ksi (approximately 1200 MPa) and a hardness range of 28–32 HRC, they are suitable for demanding service conditions across a variety of industrial sectors.

We offer multiple surface finish options, including Black Finish, Hot Dip Galvanized (HDG), Zinc Plated, and Zinc Flake Coatings, allowing customers to select the most suitable protection for their operating environment. Available sizes include 5/16″ to 2-1/2″ Heavy Hex Nuts, M6 to M72 Hex Nuts, and M10 to M48 Full Height Nuts, with custom dimensions supplied upon request.

All products undergo proof load, hardness, chemical composition, and mechanical property testing to verify compliance with applicable ASTM standards. These nuts are commonly used in oil and gas facilities, petrochemical plants, refineries, power stations, process industries, pressure equipment, and piping systems where robust fastening solutions are required.

Specification

Mark = RF

Standard: ASTM A194

Grade: 2H

Product Type: Heavy Hex Nut / Hex Nut / Full Hight

Material: Carbon Steel / Heat Treated (Quenched & Tempered)

Mechanical Properties:

  • Proof Load: 175 ksi (minimum) ≈ 1200 MPa
  • Designed for high-strength bolting applications

Hardness:28-32 HRC

Thread Type: UNC

Dimensional Standard: ASME B18.2.2 (Heavy Hex Nuts)

Surface Finish / Coating: Black / Hot Dip Galvanized (HDG) / Zinc plating / Zinc flake (as required)

Size Range:

  • In inch 5/16″ to 2.1/2″ diameter ( Heavy Hex )
  • In MM M6 TO M 72 ( Hex Nut )
  • In MM M10 TO M 48 ( Full Hight H=D ) (or as per customer requirement)

Testing: Proof Load Test /Hardness Test/Chemical & Mechanical Tests as per ASTM A194

Application:
Oil & Gas, Petrochemical, Refineries, Power Plants, High-pressure & High-temperature services

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We are dealing into following fasteners

  • ASTM Fasteners :- Available in Grades A193 Gr. B7 / A 194 Gr. 2H, B7M/2HM, B8 /8, B8M/ 8M, A320 Gr.L7 / 4. etc.,
  • S.S. Fasteners :- Available in Grades 304, 316, 202, 304L, 316L etc.,
  • H.T. Fasteners :- Available in Grades 8.8,10.9,12.9 etc.,
  • M.S. Fasteners :- Available in Grade 4.6.
  • Types of Coating ( Plating ) :- We also provide Fasteners with Electro Zinc Plating, Hot Dip Galvanize, Cadmium, Nickel, PTFE Coating etc.,.

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We are pleased to introduce ourselves  as a leading Importer and Stockist of ASTM A193 Gr.B7/A194 Gr.2H Fasteners with Brand Name “RF” .

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